source: MondoRescue/branches/3.3/mondo/src/common/libmondo-cli.c@ 3865

/***************************************************************************
$Id: libmondo-cli.c 3857 2024-03-06 16:30:47Z bruno $
*******************************************************************/

/**
 * @file
 * Functions for handling command-line arguments passed to mondoarchive.
 */

/** @def BOOT_LOADER_CHARS The characters allowed for boot loader on this platform. */

#include <pthread.h>
#include "my-stuff.h"
#include "mr_mem.h"
#include "mr_str.h"
#include "mondostructures.h"
#include "libmondo-cli-EXT.h"
#include "libmondo.h"

extern int g_loglevel;
extern bool g_text_mode;
extern bool g_fail_immediately;
extern char g_startdir[MAX_STR_LEN];    ///< ????? @bug ?????
extern char *MONDO_OPTIONS;

/*@ file pointer **************************************************/
extern FILE *g_tape_stream;

/*@ long long *****************************************************/
extern long long g_tape_posK;

/*@ long **********************************************************/
extern long g_noof_sets;

/*@ bool******** **************************************************/
bool g_debugging = FALSE;       ///< ????? @bug ????? @ingroup globalGroup
bool g_running_live = FALSE;    ///< ????? @bug ????? @ingroup globalGroup
extern bool g_cd_recovery;

extern void setup_tmpdir(char *path);
extern void setup_scratchdir(char *path);
void mr_make_devlist_from_pathlist(char *pathlist, char mode);
extern double g_kernel_version;
extern int g_current_media_number;
extern pid_t g_main_pid;
extern char *resolve_softlinks_to_get_to_actual_device_file(char *);
extern char *mr_popup_and_get_string(const char *, const char *, const char *);
extern char *call_program_and_get_last_line_of_output(const char *);

extern t_boot mr_boot_type(void);

/* Do we use extended attributes and acl ? 
 * By default no, use -z option to force their usage */
extern char *g_getfacl;
extern char *g_getfattr;

/* Reference to global bkpinfo */
extern struct s_bkpinfo *bkpinfo;

extern void free_MR_global_filenames(void);

long g_max_biggie_size = BIGGIEMAXSIZE;

/**
 * @addtogroup cliGroup
 * @{
 */
/**
 * Populate @p bkpinfo from the command-line parameters stored in @p argc and @p argv.
 * @param argc The argument count, including the program name; @p argc passed to main().
 * @param argv The argument vector; @p argv passed to main().
 * @param bkpinfo The backup information structure to populate.
 * @return The number of problems with the command line (0 for success).
 */
int
handle_incoming_parameters(int argc, char *argv[])
{
    /*@ int *** */
    int res = 0;
    int retval = 0;
    int i = 0;

    /*@ buffers *************** */
    char flag_val[128][MAX_STR_LEN];
    bool flag_set[128];

    for (i = 0; i < 128; i++) {
        flag_val[i][0] = '\0';
        flag_set[i] = FALSE;
    }
    bkpinfo->media_size = 650; /* default */
    res = retrieve_switches_from_command_line(argc, argv, flag_val, flag_set);
    retval += res;
    if (!retval) {
        res = process_switches(flag_val, flag_set);
        retval += res;
    }

    log_msg(3, "Switches:-");
    for (i = 0; i < 128; i++) {
        if (flag_set[i]) {
            log_msg(3, "-%c %s", i, flag_val[i]);
        }
    }
    bkpinfo->boot_type = mr_boot_type();

    return (retval);
}


/**
 * Store the sizespec(s) stored in @p value into @p bkpinfo.
 * @param bkpinfo The backup information structure; the @c bkpinfo->media_size field will be populated.
 * @param value The sizespec (e.g. "2g", "40m").
 * @return 0, always.
 * @bug Return code not needed.
 */
int process_the_s_switch(char *value)
{
    assert(bkpinfo != NULL);
    assert(value != NULL);

    bkpinfo->media_size = -1;   /* dummy value */
    bkpinfo->media_size = friendly_sizestr_to_sizelong(value);
    log_msg(3, "media_size = %ld", bkpinfo->media_size);
    if (bkpinfo->media_size <= 0) {
        log_msg(1, "You gave media an invalid size %s", value);
        return (-1);
    }
    return (0);
}

/**
 * Process mondoarchive's command-line switches.
 * @param bkpinfo The backup information structure to populate.
 * @param flag_val An array of the argument passed to each switch (the letter is the index).
 * If a switch is not set or has no argument, the field in @p flag_val doesn't matter.
 * @param flag_set An array of <tt>bool</tt>s indexed by switch letter: TRUE if it's set,
 * FALSE if it's not.
 * @return The number of problems with the switches, or 0 for success.
 * @bug Maybe include a list of all switches (inc. intentionally undocumented ones not in the manual!) here?
 */
int
process_switches(char flag_val[128][MAX_STR_LEN], bool flag_set[128])
{

    /*@ ints *** */
    int i = 0;
    int retval = 0;

    /*@ buffers ** */
    char *tmp = NULL;
    char *tmp1 = NULL;
    char *tmp2 = NULL;
    char *psz = NULL;
    char *p = NULL;
    char *q = NULL;
    char *q2 = NULL;

    long itbs = 0L;

    struct stat buf;

    malloc_string(tmp);

    assert(bkpinfo != NULL);
    assert(flag_val != NULL);
    assert(flag_set != NULL);

    bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;

    /* compulsory */
    i = flag_set['c'] + flag_set['i'] + flag_set['n'] +
        flag_set['t'] + flag_set['u'] + flag_set['r'] +
        flag_set['w'] + flag_set['C'] + flag_set['U'];
    if ((i == 0) && (! bkpinfo->restore_data)) {
        retval++;
        log_to_screen("You must specify the media type\n");
    }
    if (i > 1) {
        retval++;
        log_to_screen("Please specify only one media type\n");
    }

    if (flag_set['K']) {
        g_loglevel = atoi(flag_val['K']);
            log_msg(1,"Loglevel forced to %d",g_loglevel);
        if (g_loglevel < 3) {
            g_loglevel = 3;
        }
    }

    if ((flag_set['L'] && flag_set['0']) && (! bkpinfo->restore_data)) {
        retval++;
        log_to_screen("You cannot have 'no compression' _and_ LZOP.\n");
    }
    if (! bkpinfo->restore_data) {
        bkpinfo->backup_data = flag_set['O'];
    }
    bkpinfo->verify_data = flag_set['V'];

    if (flag_set['I'] && !bkpinfo->backup_data) {
        log_to_screen("-I switch is ignored if just verifying");
    }
    if (flag_set['E'] && !bkpinfo->backup_data) {
        log_to_screen("-E switch is ignored if just verifying");
    }

    if (!find_home_of_exe("afio")) {
        if (find_home_of_exe("star")) {
            flag_set['R'] = TRUE;
            log_msg(1, "Using star instead of afio");
        } else {
            fatal_error("Neither afio nor star is installed. Please install at least one.");
        }
    }

    if (flag_set['R']) {
        bkpinfo->use_star = TRUE;
        if (flag_set['L']) {
            fatal_error("You may not use star and lzop at the same time.");
        }
        if (!find_home_of_exe("star")) {
            fatal_error("Please install 'star' RPM or tarball if you are going to use -R. Thanks.");
        }
    }

    if ((flag_set['W']) && (! bkpinfo->restore_data)) {
        bkpinfo->nonbootable_backup = TRUE;
        log_to_screen("Warning - you have opted for non-bootable backup");
        if (flag_set['f'] || flag_set['l']) {
            log_to_screen
                ("You don't need to specify bootloader or bootdevice");
        }
    }

    if (flag_set['I']) {
        if (flag_val['I'][0] == '-') {
            retval++;
            log_to_screen("Please supply a sensible value with '-I'\n");
        }
        if (!strcmp(flag_val['I'],"/")) {
            log_msg(2, "'/' is pleonastic.");
        }
        if (bkpinfo->include_paths && bkpinfo->include_paths[0]) {
            mr_strcat(bkpinfo->include_paths, "|");
        }

        mr_asprintf(tmp1, "%s", flag_val['I']);
        p = tmp1;
        q = tmp1;

        /* Cut the flag_val['I'] in parts containing all paths to test them */
        while (p != NULL) {
            q = strchr(p, '|');
            if (q != NULL) {
                *q = '\0';
                if ((stat(p, &buf) != 0) && (! bkpinfo->restore_data)) {
                    log_msg(1, "ERROR ! %s doesn't exist", p);
                    fatal_error("ERROR ! You specified a directory to include which doesn't exist");
                }
                p = q+1 ;
            } else {
                if ((stat(p, &buf) != 0) && (! bkpinfo->restore_data)) {
                    log_msg(1, "ERROR ! %s doesn't exist", p);
                    fatal_error("ERROR ! You specified a directory to include which doesn't exist");
                }
                p = NULL;
            }
        }
        mr_free(tmp1);
        mr_make_devlist_from_pathlist(flag_val['I'], 'I');
        log_msg(4, "Finished with the -I option");
    }

    if (g_kernel_version >= 2.6 && !flag_set['d'] && (flag_set['c'] || flag_set['w']) && (! bkpinfo->restore_data)) {
        fatal_error("If you are using the 2.6.x kernel, please specify the CD-R(W) device.");
    }


    if (flag_set['J']) {
        if (flag_set['I']) {
            retval++;
            log_to_screen("Please do not use -J in combination with -I. If you want to make a list of files to backup, that's fine, use -J <filename> but please don't muddy the waters by combining -J with -I. Thanks. :-)");
        }
        bkpinfo->make_filelist = FALSE;
        mr_asprintf(bkpinfo->include_paths, "%s", flag_val['J']);
    }

    if ((flag_set['c'] || flag_set['w'] || flag_set['C'] || flag_set['r']) && (! bkpinfo->restore_data)) {
        if (!flag_set['r'] && g_kernel_version <= 2.5 && strstr(flag_val['d'], "/dev/")) {
            fatal_error("Please don't give a /dev entry. Give a SCSI node for the parameter of the -d flag.");
        }
        if (flag_set['r'] && g_kernel_version <= 2.5 && !strstr(flag_val['d'], "/dev/")) {
            fatal_error("Please give a /dev entry, not a SCSI node, as the parameter of the -d flag.");
        }
        if (g_kernel_version >= 2.6 && !strstr(flag_val['d'], "/dev/")) {
            log_to_screen("Linus says 2.6 has a broken ide-scsi module. Proceed at your own risk...");
        }

        if (system("which cdrecord > /dev/null 2> /dev/null") && system("which dvdrecord > /dev/null 2> /dev/null")) {
            fatal_error("Please install dvdrecord/cdrecord and try again.");
        }
        if (flag_set['C']) {
            bkpinfo->cdrw_speed = atoi(flag_val['C']);
            if (bkpinfo->cdrw_speed < 1) {
                fatal_error("You specified a silly speed for a CD-R[W] drive");
            }
            if (!flag_set['L']) {
                log_to_screen("You must use -L with -C. Therefore I am setting it for you.");
                flag_set['L'] = 1;
                flag_val['L'][0] = '\0';
            }
        } else {
            log_msg(3, "flag_val['c'] = %s", flag_val['c']);
            log_msg(3, "flag_val['w'] = %s", flag_val['w']);
            if (flag_set['c']) {
                bkpinfo->cdrw_speed = atoi(flag_val['c']);
            } else if (flag_set['w']) {
                bkpinfo->cdrw_speed = atoi(flag_val['w']);
            } else if (flag_set['r']) {
                bkpinfo->cdrw_speed = 1;    /*atoi(flag_val['r']); */
            }

            if (bkpinfo->cdrw_speed < 1) {
                fatal_error("You specified a silly speed for a CD-R[W] drive");
            }
        }
    }

    if ((flag_set['t'] && !flag_set['d']) && (! bkpinfo->restore_data)) {
        log_it("Hmm! No tape drive specified. Let's see what we can do.");
        if (find_tape_device(flag_val['d'])) {
            fatal_error("Tape device not specified. I couldn't find it either.");
        }
        flag_set['d'] = TRUE;
        log_to_screen("You didn't specify a tape streamer device. I'm assuming %s", flag_val['d']);
    }

    if (flag_set['U'])          // USB
    {
        if (! flag_set['d']) {
            fatal_error("You need to specify a device file with -d for bootable USB device usage");
        }
        if ((!flag_set['s']) && (! bkpinfo->restore_data)) {
            fatal_error("You did not specify a size (-s) for your USB device. Aborting");
        }
    }

    if (flag_set['r'])          // DVD
    {
        if (flag_set['m']) {
            fatal_error("Manual CD tray (-m) not yet supported in conjunction w/ DVD drives. Drop -m.");
        }
        if (!flag_set['d']) {
            if (!find_dvd_device(flag_val['d'])) {
                flag_set['d'] = TRUE;
                log_to_screen("I guess DVD drive is at %s", flag_val['d']);
            }
        }
        if (strchr(flag_val['d'], ',')) {
            fatal_error("Please don't give a SCSI node. Give a _device_, preferably a /dev entry, for the parameter of the -d flag.");
        }
        if (! bkpinfo->restore_data) {
            if (!find_home_of_exe("growisofs")) {
                fatal_error("Please install growisofs (probably part of dvd+rw-tools). If you want DVD support, you need it.");
            }
            if (!find_home_of_exe("dvd+rw-format")) {
                fatal_error("Please install dvd+rw-format (probably part of dvd+rw-tools). If you want DVD support, you need it.");
            }
            if (!flag_set['s']) {
                sprintf(flag_val['s'], "%d", DEFAULT_DVD_DISK_SIZE);    // 4.7 salesman's GB = 4.482 real GB = 4582 MB
                strcat(flag_val['s'], "m");
                log_to_screen("You did not specify a size (-s) for DVD. I'm guessing %s.", flag_val['s']);
                flag_set['s'] = 1;
            }
        }
    }

    if (flag_set['t'] || flag_set['u']) {   /* tape size */
        if (strchr(flag_val['d'], ',')) {
            fatal_error("Please don't give a SCSI node. Give a _device_, preferably a /dev entry, for the parameter of the -d flag.");
        }
        if ((flag_set['O']) && (! bkpinfo->restore_data)) {
            if (flag_set['s']) {
                if (flag_set['t']) {
                    fatal_error("For the moment, please don't specify a tape size. Mondo should handle end-of-tape gracefully anyway.");
                }
                if (process_the_s_switch(flag_val['s'])) {
                    fatal_error("Bad -s switch");
                }
            } else if (flag_set['u'] || flag_set['t']) {
                bkpinfo->media_size = 0;
            } else {
                retval++;
                log_to_screen("Tape size not specified.\n");
            }
        }
    } else if (! bkpinfo->restore_data) {           /* CD|USB size */
        if (flag_set['s']) {
            if (process_the_s_switch(flag_val['s'])) {
                fatal_error("Bad -s switch");
            }
        }
        if (flag_set['w']) {
            bkpinfo->wipe_media_first = TRUE;
        }                       /* CD-RW */
    }

    if (flag_set['n']) {
        mr_asprintf(bkpinfo->netfs_mount, "%s", flag_val['n']);
        if (!flag_set['d']) {
            mr_asprintf(bkpinfo->netfs_remote_dir, "/");
            mr_asprintf(bkpinfo->isodir, "%s", ".");
        }
        /* test for protocol */
        p = strstr(bkpinfo->netfs_mount, "://");
        if (p == NULL) {
            /* protocol not found assuming NFS for compatibility */
            mr_asprintf(q,"nfs");

            p = strchr(bkpinfo->netfs_mount, ':');
            if (p == NULL) {
                fatal_error("No protocol specified for remote share mount, nor any old NFS syntax found.\nPlease do man mondoarchive as syntax changed");
            }
            /* p points on to the string server:/path */
            p = bkpinfo->netfs_mount;

        } else {
            /* Isolate the protocol */
            *p = '\0';
            mr_asprintf(q,"%s",bkpinfo->netfs_mount);

            /* Skip proto now */
            p++;
            p++;
            p++;
        }
        /* whatever done before proto is pointed to by q */
        bkpinfo->netfs_proto = q;

        /* p points on to the string server:/path */
        /* Store the 2 values */
        q2 = bkpinfo->netfs_mount;
        mr_asprintf(bkpinfo->netfs_mount, "%s", p);
        mr_free(q2);

        /* test if we specified a user */
        p = strchr(bkpinfo->netfs_mount, '@');
        if (p != NULL) {
            /* User found. Store the 2 values */
            mr_asprintf(bkpinfo->netfs_user, "%s", bkpinfo->netfs_mount);
            p = strchr(bkpinfo->netfs_user, '@');
            *p = '\0';
            p = strchr(bkpinfo->netfs_mount, '@');
            p++;
            /* new netfs mount */
            q2 = bkpinfo->netfs_mount;
            mr_asprintf(bkpinfo->netfs_mount, "%s", p);
            mr_free(q2);
        }
        if (bkpinfo->netfs_user != NULL) {
            mr_asprintf(tmp1, "mount | grep -E \"^[a-z]*#*[%s@]*%s[/]* .*\" | cut -d' ' -f3", bkpinfo->netfs_user, bkpinfo->netfs_mount);
        } else {
            mr_asprintf(tmp1, "mount | grep -E \"^[a-z]*#*%s[/]* .*\" | cut -d' ' -f3", bkpinfo->netfs_mount);
        }
        mr_free(bkpinfo->isodir);
        bkpinfo->isodir = call_program_and_get_last_line_of_output(tmp1);
        mr_free(tmp1);

        log_msg(3, "proto = %s", bkpinfo->netfs_proto);
        log_msg(3, "mount = %s", bkpinfo->netfs_mount);
        if (bkpinfo->netfs_user) {
            log_msg(3, "user = %s", bkpinfo->netfs_user);
        }
        log_msg(3, "isodir= %s", bkpinfo->isodir);

        if (strlen(bkpinfo->isodir) < 3) {
            log_to_screen("Network share %s is not mounted. Trying to mount it for you.\n",bkpinfo->netfs_mount);
            if (bkpinfo->netfs_user) {
                if (strstr(bkpinfo->netfs_proto, "sshfs")) {
                    mr_asprintf(tmp1, "sshfs %s@%s", bkpinfo->netfs_user, bkpinfo->netfs_mount);
                } else if (strstr(bkpinfo->netfs_proto, "smbfs")) {
                    mr_asprintf(tmp1, "mount -t cifs %s -o user=%s", bkpinfo->netfs_mount, bkpinfo->netfs_user);
                } else if (strstr(bkpinfo->netfs_proto, "nfs")) {
                    mr_asprintf(tmp1, "mount -t %s %s@%s", bkpinfo->netfs_proto, bkpinfo->netfs_user, bkpinfo->netfs_mount);
                } else {
                    log_to_screen("Protocol %s not supported yet for network backups.\n", bkpinfo->netfs_proto);
                    fatal_error("Bad Protocol\n");
                }
            } else {
                if (strstr(bkpinfo->netfs_proto, "sshfs")) {
                    mr_asprintf(tmp1, "sshfs %s", bkpinfo->netfs_mount);
                } else if (strstr(bkpinfo->netfs_proto, "smbfs")) {
                    mr_asprintf(tmp1, "mount -t cifs %s", bkpinfo->netfs_mount);
                } else if (strstr(bkpinfo->netfs_proto, "nfs")) {
                    mr_asprintf(tmp1, "mount -t %s %s", bkpinfo->netfs_proto, bkpinfo->netfs_mount);
                } else {
                    log_to_screen("Protocol %s not supported yet for network backups.\n", bkpinfo->netfs_proto);
                    fatal_error("Bad Protocol\n");
                }
            }
            i = system(tmp1);
            mr_free(tmp1);

            if (i) {
                log_to_screen("Unable to mount Network share %s. Please mount manually.\n", bkpinfo->netfs_mount);
                retval++;
            } else {
                if (bkpinfo->netfs_user) {
                    mr_asprintf(tmp1, "mount | grep -E \"^[%s@]*%s[/]* .*\" | cut -d' ' -f3", bkpinfo->netfs_user, bkpinfo->netfs_mount);
                } else {
                    mr_asprintf(tmp1, "mount | grep -E \"^%s[/]* .*\" | cut -d' ' -f3", bkpinfo->netfs_mount);
                }
                mr_free(bkpinfo->isodir);
                bkpinfo->isodir = call_program_and_get_last_line_of_output(tmp1);
                if (strlen(bkpinfo->isodir) < 3) {
                    retval++;
                    log_to_screen("Network share %s is strangely not mounted. Please mount manually...\n", bkpinfo->netfs_mount);
                }
            }
        }
    }

    if (flag_set['c']) {
        bkpinfo->backup_media_type = cdr;
    }
    if (flag_set['C']) {
        bkpinfo->backup_media_type = cdstream;
    }
    if (flag_set['i']) {
        bkpinfo->backup_media_type = iso;
    }
    if (flag_set['n']) {
        bkpinfo->backup_media_type = netfs;
        /* Never try to eject a Network device */
        bkpinfo->please_dont_eject = TRUE;
    }
    if (flag_set['r']) {
        bkpinfo->backup_media_type = dvd;
    }
    if (flag_set['t']) {
        bkpinfo->backup_media_type = tape;
    }
    if (flag_set['u']) {
        bkpinfo->backup_media_type = udev;
    }
    if (flag_set['w']) {
        bkpinfo->backup_media_type = cdrw;
    }
    if (flag_set['U']) {
        bkpinfo->backup_media_type = usb;
        /* Never try to eject a USB device */
        bkpinfo->please_dont_eject = TRUE;
    }
    if (flag_set['z']) {
        if (find_home_of_exe("getfattr")) {
            mr_asprintf(g_getfattr,"getfattr");
        }
        if (find_home_of_exe("getfacl")) {
            mr_asprintf(g_getfacl,"getfacl");
        }
    }

    /* optional, popular */
    if (flag_set['g']) {
        g_text_mode = FALSE;
    }

    if (flag_set['E']) {
        if ((flag_val['E'][0] == '-')) {
            retval++;
            log_to_screen("Please supply a sensible value with '-E'\n");
        }
        mr_asprintf(tmp1, "%s", flag_val['E']);

        p = tmp1;
        q = tmp1;

        /* Cut the flag_val['E'] in parts containing all paths to test them */
        while (p != NULL) {
            q = strchr(p, '|');
            if (q != NULL) {
                *q = '\0';
                /* Fix bug 14 where ending / cause a problem later 
                * so handled here for the moment */
                q--;
                if (*q == '/') {
                    *q = '\0';
                }
                q++;
                /* End of bug fix */
                if ((stat(p, &buf) != 0) && (! bkpinfo->restore_data)) {
                    log_msg(1, "WARNING ! %s doesn't exist", p);
                }
                p = q+1 ;
            } else {
                if ((stat(p, &buf) != 0) && (! bkpinfo->restore_data)) {
                    log_msg(1, "WARNING ! %s doesn't exist", p);
                }
                p = NULL;
            }
        }
        mr_free(tmp1);

        mr_make_devlist_from_pathlist(flag_val['E'], 'E');
        log_msg(4, "Finished with the -E option");
    }

    if (flag_set['e']) {
        bkpinfo->please_dont_eject = TRUE;
    }

    if (flag_set['M']) {
        g_max_biggie_size = atol(flag_val['M']);
        log_msg(1, "Max size for biggie file is now %ld KB", g_max_biggie_size);
    }

    if ((flag_set['N']) && (! bkpinfo->restore_data))       // exclude Network mounts & devices
    {
        psz = list_of_NETFS_mounts_only();
        log_msg(5, "-N means we'll exclude %s", psz);
        if (bkpinfo->exclude_paths) {
            mr_strcat(bkpinfo->exclude_paths, "|%s", psz);
            mr_free(psz);
        } else {
            bkpinfo->exclude_paths = psz;
        }

        if (bkpinfo->exclude_paths != NULL) {
            log_msg(3, "-N means we're now excluding %s", bkpinfo->exclude_paths);
        }
    }

    if (flag_set['b']) {
        mr_asprintf(psz, "%s", flag_val['b']);
        log_msg(1, "psz = '%s'", psz);
        if (psz[strlen(psz) - 1] == 'k') {
            psz[strlen(psz) - 1] = '\0';
            itbs = atol(psz) * 1024L;
        } else {
            itbs = atol(psz);
        }
        mr_free(psz);
        log_msg(1, "'%s' --> %ld", flag_val['b'], itbs);
        log_msg(1, "Internal tape block size is now %ld bytes", itbs);
        if (itbs % 512 != 0 || itbs < 256 || itbs > 1024L * 1024) {
            fatal_error("Are you nuts? Silly, your internal tape block size is. Abort, I shall.");
        }
        bkpinfo->internal_tape_block_size = itbs;
    }

    if ((flag_set['D']) && (! bkpinfo->restore_data)) {
        bkpinfo->differential = 1;
//      bkpinfo->differential = atoi (flag_val['D']);
        if ((bkpinfo->differential < 1) || (bkpinfo->differential > 9)) {
            fatal_error("The D option should be between 1 and 9 inclusive");
        }
    }

    if (flag_set['x']) {
        mr_asprintf(bkpinfo->image_devs, "%s", flag_val['x']);
        if ((run_program_and_log_output("which ntfsclone", 2)) && (! bkpinfo->restore_data)) {
            fatal_error("Please install ntfsprogs package/tarball.");
        }
    }

    if (flag_set['m']) {
        bkpinfo->manual_cd_tray = TRUE;
    }

    if ((flag_set['k']) && (! bkpinfo->restore_data)) {
        mr_asprintf(bkpinfo->kernel_path, "%s", flag_val['k']);
        if (!does_file_exist(bkpinfo->kernel_path)) {
            retval++;
            log_to_screen("You specified kernel '%s', which does not exist\n", bkpinfo->kernel_path);
        }
    }

    if (flag_set['p']) {
        mr_asprintf(bkpinfo->prefix, "%s", flag_val['p']);
        log_msg(1,"Prefix forced to %s",bkpinfo->prefix);
    }

    if (flag_set['d']) {        /* backup directory (if ISO/NETFS) */
        if (flag_set['i']) {
            mr_asprintf(bkpinfo->isodir, "%s", flag_val['d']);
            mr_asprintf(tmp1, "ls -l %s", bkpinfo->isodir);
            if (run_program_and_log_output(tmp1, 2)) {
                mr_free(tmp1);
                fatal_error("output folder does not exist - please create it");
            }
            mr_free(tmp1);
        } else if (flag_set['n']) {
            mr_free(bkpinfo->netfs_remote_dir);
            mr_asprintf(bkpinfo->netfs_remote_dir, "%s", flag_val['d']);
        } else {                /* backup device (if tape/CD-R/CD-RW) */
            mr_asprintf(bkpinfo->media_device, "%s", flag_val['d']);
        }
    }

    if ((flag_set['n']) && (! bkpinfo->restore_data)) {
        mr_asprintf(tmp1,"%s/%s/.dummy.txt", bkpinfo->isodir,bkpinfo->netfs_remote_dir);
        if ((bkpinfo->netfs_user) && (strstr(bkpinfo->netfs_proto,"nfs"))) {
            mr_asprintf(tmp2, "su - %s -c \"echo hi > %s\"", bkpinfo->netfs_user, tmp1);
        } else {
            mr_asprintf(tmp2, "echo hi > %s", tmp1);
        }
        i = run_program_and_log_output(tmp2, 2);
        mr_free(tmp2);

        if (i) {
            retval++;
            log_to_screen("Are you sure directory '%s' exists in remote dir '%s'?\nIf so, do you have rights to write to it?\n", bkpinfo->netfs_remote_dir, bkpinfo->netfs_mount);
        }
        unlink(tmp1);
        mr_free(tmp1);
    }

    if (!flag_set['d'] && (flag_set['c'] || flag_set['w'] || flag_set['C'])) {
        if (g_kernel_version >= 2.6) {
            tmp1 = mr_popup_and_get_string("Device", "Please specify the device", bkpinfo->media_device);
            if (tmp1 == NULL) {
                retval++;
                log_to_screen("User opted to cancel.");
            } else {
                mr_free(bkpinfo->media_device);
                bkpinfo->media_device = tmp1;
            }
        } else if (find_cdrw_device(bkpinfo->media_device)) {
            retval++;
            log_to_screen("Tried and failed to find CD-R[W] drive automatically.\n");
        } else {
            flag_set['d'] = TRUE;
            strncpy(flag_val['d'], bkpinfo->media_device, MAX_STR_LEN / 4);
        }
    }

    if ((!flag_set['d'] && !flag_set['n'] && !flag_set['C']) && (! bkpinfo->restore_data)) {
        retval++;
        log_to_screen("Please specify the backup device/directory.\n");
        fatal_error("You didn't use -d to specify the backup device/directory.");
    }

    for (i = '0'; i <= '9'; i++) {
        if (flag_set[i]) {
            bkpinfo->compression_level = i - '0';
        }                       /* not '\0' but '0' */
    }

    if (flag_set['S']) {
        setup_scratchdir(flag_val['S']);
        mr_asprintf(tmp1, "touch %s/.foo.dat", bkpinfo->scratchdir);
        if (run_program_and_log_output(tmp1, 1)) {
            retval++;
            mr_free(tmp1);
            log_to_screen("Please specify a scratchdir which I can write to. :)");
            fatal_error("I cannot write to the scratchdir you specified.");
        }
        mr_free(tmp1);

        mr_asprintf(tmp1, "ln -sf %s/.foo.dat %s/.bar.dat", bkpinfo->scratchdir, bkpinfo->scratchdir);
        if (run_program_and_log_output(tmp1, 1)) {
            retval++;
            mr_free(tmp1);
            log_to_screen("Please don't specify a SAMBA or VFAT or NFS scratchdir.");
            fatal_error("I cannot write to the scratchdir you specified.");
        }
        mr_free(tmp1);
    }

    if (flag_set['T']) {
        setup_tmpdir(flag_val['T']);
        mr_asprintf(tmp1, "touch %s/.foo.dat", bkpinfo->tmpdir);
        i = run_program_and_log_output(tmp1, 1);
        mr_free(tmp1);

        if (i) {
            retval++;
            log_to_screen("Please specify a tempdir which I can write to. :)");
            fatal_error("I cannot write to the tempdir you specified.");
        }
        mr_asprintf(tmp1, "ln -sf %s/.foo.dat %s/.bar.dat", bkpinfo->tmpdir, bkpinfo->tmpdir);
        i = run_program_and_log_output(tmp1, 1);
        mr_free(tmp1);

        if (i) {
            retval++;
            log_to_screen("Please don't specify a SAMBA or VFAT or NFS tmpdir.");
            fatal_error("I cannot write to the tempdir you specified.");
        }
    }

    if ((flag_set['A']) && (! bkpinfo->restore_data)) {
        mr_asprintf(bkpinfo->call_after_iso, "%s", flag_val['A']);
    }

    if ((flag_set['B']) && (! bkpinfo->restore_data)) {
        mr_asprintf(bkpinfo->call_before_iso, "%s", flag_val['B']);
    }

    if ((flag_set['H']) && (! bkpinfo->restore_data)) {
        g_cd_recovery = TRUE;
    }

    if ((flag_set['l']) && (! bkpinfo->restore_data)) {
#ifdef __FreeBSD__
#  define BOOT_LOADER_CHARS "GLBMR"
#else
#  ifdef __IA64__
#    define BOOT_LOADER_CHARS "GER"
#  else
#    define BOOT_LOADER_CHARS "GLR"
#  endif
#endif
        if (!strchr(BOOT_LOADER_CHARS, (bkpinfo->boot_loader = flag_val['l'][0]))) {
            log_msg(1, "%c? What is %c? I need G, L, E or R.", bkpinfo->boot_loader, bkpinfo->boot_loader);
            fatal_error("Please specify GRUB, LILO, ELILO  or RAW with the -l switch");
        }
#undef BOOT_LOADER_CHARS
    }

    if (flag_set['f']) {
        mr_free(bkpinfo->boot_device);
        mr_asprintf(bkpinfo->boot_device, "%s", resolve_softlinks_to_get_to_actual_device_file(flag_val['f']));
    }

    if ((flag_set['P']) && (! bkpinfo->restore_data)) {
        mr_asprintf(bkpinfo->postnuke_tarball, "%s", flag_val['P']);
    }

    if (flag_set['Q']) {
        i = which_boot_loader(tmp);
        log_msg(3, "boot loader is %c, residing at %s", i, tmp);
        printf("boot loader is %c, residing at %s\n", i, tmp);
        finish(0);
    }

    if ((flag_set['L']) && (! bkpinfo->restore_data)) {
        bkpinfo->use_lzo = TRUE;
        if (run_program_and_log_output("which lzop", 2)) {
            retval++;
            log_to_screen("Please install LZOP. You can't use '-L' until you do.\n");
        }
    }

    if (flag_set['F']) {
        log_msg(3, "-F means we will fail immediately at the first interaction request");
        g_fail_immediately = TRUE;
    }

    if ((flag_set['G']) && (! bkpinfo->restore_data)) {
        bkpinfo->use_gzip = TRUE;
        if (run_program_and_log_output("which gzip", 2)) {
            retval++;
            log_to_screen("Please install gzip. You can't use '-G' until you do.\n");
        }
    }

    if ((flag_set['Y']) && (! bkpinfo->restore_data)) {
        bkpinfo->use_lzma = TRUE;
        if (run_program_and_log_output("which lzma", 2)) {
            retval++;
            log_to_screen("Please install lzma. You can't use '-Y' until you do.\n");
        }
    }

    bkpinfo->use_obdr = FALSE;
    if (flag_set['o']) {
        if ((!flag_set['t']) && (! bkpinfo->restore_data)) {
            log_to_screen("OBDR support is only available for tapes. Use the -t option");
            fatal_error("Aborting");
        }
        bkpinfo->use_obdr = TRUE;
    }

#ifndef __FreeBSD__
    if ((!is_this_a_valid_disk_format("vfat")) && (! bkpinfo->restore_data)) {
        bkpinfo->make_cd_use_lilo = TRUE;
        log_to_screen("Your kernel appears not to support vfat filesystems. I am therefore");
        log_to_screen("using LILO instead of SYSLINUX as the media boot loader.");
    }
    if ((run_program_and_log_output("which mkfs.vfat", 2)) && (! bkpinfo->restore_data)) {
        bkpinfo->make_cd_use_lilo = TRUE;
#ifdef __IA32__
        log_to_screen("Your filesystem is missing 'mkfs.vfat', so I cannot use SYSLINUX as");
        log_to_screen("your boot loader. I shall therefore use LILO instead.");
#endif
#ifdef __IA64__
        log_to_screen("Your filesystem is missing 'mkfs.vfat', so I cannot prepare the EFI");
        log_to_screen("environment correctly. Please install it.");
        fatal_error("Aborting");
#endif
    }
#ifdef __IA64__
    /* We force ELILO usage on IA64 */
    bkpinfo->make_cd_use_lilo = TRUE;
#endif
#endif

    if (! bkpinfo->restore_data) {
        i = flag_set['O'] + flag_set['V'];
        if (i == 0) {
            retval++;
            log_to_screen("Specify backup (-O), verify (-V) or both (-OV).\n");
        }
    }

    if ((! bkpinfo->restore_data) && (flag_set['Z'])) {
            fatal_error("The -Z switch is only valid in restore mode");
    }

    if (flag_set['Z']) {
        if (! strcmp(flag_val['Z'], "nuke")) {
            bkpinfo->restore_mode = nuke;
        } else if (! strcmp(flag_val['Z'], "interactive")) {
            bkpinfo->restore_mode = interactive;
        } else if (! strcmp(flag_val['Z'], "compare")) {
            bkpinfo->restore_mode = compare;
        } else if (! strcmp(flag_val['Z'], "mbr")) {
            bkpinfo->restore_mode = mbr;
        } else if (! strcmp(flag_val['Z'], "iso")) {
            bkpinfo->restore_mode = isoonly;
        } else if (! strcmp(flag_val['Z'], "isonuke")) {
            bkpinfo->restore_mode = isonuke;
        } else {
            bkpinfo->restore_mode = interactive;
        }
    }

/* and finally... */

    paranoid_free(tmp);
    return (retval);
}



/**
 * Get the switches from @p argc and @p argv using getopt() and place them in
 * @p flag_set and @p flag_val.
 * @param argc The argument count (@p argc passed to main()).
 * @param argv The argument vector (@p argv passed to main()).
 * @param flag_val An array indexed by switch letter - if a switch is set and
 * has an argument then set flag_val[switch] to that argument.
 * @param flag_set An array indexed by switch letter - if a switch is set then
 * set flag_set[switch] to TRUE, else set it to FALSE.
 * @return The number of problems with the command line (0 for success).
 */
int retrieve_switches_from_command_line(int argc, char *argv[], char flag_val[128][MAX_STR_LEN], bool flag_set[128])
{
    /*@ ints ** */
    int opt = 0;
    int i = 0;
    int len;

    /*@ bools *** */
    bool bad_switches = FALSE;

    assert(flag_val != NULL);
    assert(flag_set != NULL);

    for (i = 0; i < 128; i++) {
        flag_val[i][0] = '\0';
        flag_set[i] = FALSE;
    }
    while ((opt = getopt(argc, argv, MONDO_OPTIONS)) != -1) {
        if (opt == '?') {
            bad_switches = TRUE;
        } else {
            if (flag_set[opt]) {
                bad_switches = TRUE;
                log_to_screen("Switch -%c previously defined as %s\n", opt, flag_val[opt]);
            } else {
                flag_set[opt] = TRUE;
                if (optarg) {
                    len = strlen(optarg);
                    if (optarg[0] != '/' && optarg[len - 1] == '/') {
                        optarg[--len] = '\0';
                        log_to_screen("Warning - param '%s' should not have trailing slash!", optarg);
                    }
                    if (opt == 'd') {
                        if (strchr(flag_val[opt], '/')
                            && flag_val[opt][0] != '/') {
                            log_to_screen("-%c flag --- must be absolute path --- '%s' isn't absolute", opt, flag_val[opt]);
                            bad_switches = TRUE;
                        }
                    }
                    strcpy(flag_val[opt], optarg);
                }
            }
        }
    }
    for (i = optind; i < argc; i++) {
        bad_switches = TRUE;
        log_to_screen("Invalid arg -- %s\n", argv[i]);
    }
    return (bad_switches);
}




/**
 * Print a not-so-helpful help message and exit.
 */
void help_screen()
{
    log_msg(1, "Type 'man mondoarchive' for more information");
    exit(1);
}


/**
 * Terminate Mondo in response to a signal.
 * @param sig The signal number received.
 */
void terminate_daemon(int sig)
{
    char *tmp = NULL;
    char *tmp2 = NULL;

    switch (sig) {
    case SIGINT:
        mr_asprintf(tmp, "SIGINT");
        mr_asprintf(tmp2, "You interrupted me :-)");
        break;
    case SIGKILL:
        mr_asprintf(tmp, "SIGKILL");
        mr_asprintf(tmp2, "I seriously have no clue how this signal even got to me. Something's wrong with your system.");
        break;
    case SIGTERM:
        mr_asprintf(tmp, "SIGTERM");
        mr_asprintf(tmp2, "Got terminate signal");
        break;
    case SIGHUP:
        mr_asprintf(tmp, "SIGHUP");
        mr_asprintf(tmp2, "Hangup on line");
        break;
    case SIGSEGV:
        mr_asprintf(tmp, "SIGSEGV");
        mr_asprintf(tmp2, "Internal programming error. Please send a backtrace as well as your log.");
        break;
    case SIGPIPE:
        mr_asprintf(tmp, "SIGPIPE");
        mr_asprintf(tmp2, "Pipe was broken");
        break;
    case SIGABRT:
        mr_asprintf(tmp, "SIGABRT");
        mr_asprintf(tmp2, "Abort - probably failed assertion. I'm sleeping for a few seconds so you can read the message.");
        break;
    default:
        mr_asprintf(tmp, "(Unknown)");
        mr_asprintf(tmp2, "(Unknown)");
    }

    mr_strcat(tmp, " signal received from OS");
    log_to_screen(tmp);
    mr_free(tmp);

    log_to_screen(tmp2);
    mr_free(tmp2);
    if (sig == SIGABRT) {
        sleep(10);
    }
    kill_buffer();

    free_MR_global_filenames();

    fatal_error("MondoRescue is terminating in response to a signal from the OS");
    finish(254);                // just in case
}




/**
 * Turn signal-trapping on or off.
 * @param on If TRUE, turn it on; if FALSE, turn it off (we still trap it, just don't do as much).
 */
void set_signals(int on)
{
    int signals[] = { SIGTERM, SIGHUP, SIGTRAP, SIGABRT, SIGINT, SIGKILL, SIGSTOP, 0 };
    int i;

    signal(SIGPIPE, sigpipe_occurred);
    for (i = 0; signals[i]; i++) {
        if (on) {
            signal(signals[i], terminate_daemon);
        } else {
            signal(signals[i], termination_in_progress);
        }
    }
}




/**
 * Exit immediately without cleaning up.
 * @param sig The signal we are exiting due to.
 */
void termination_in_progress(int sig)
{
    log_msg(1, "Termination in progress");
    usleep(1000);
    pthread_exit(0);
}

/* @} - end of cliGroup */